Pneumatic tube for the tires of vehicle wheels



Jan'. 9, 1923a v 1,441,461

0. lTRAMFUSCH. PNEuMATIc TUBE Fon k1"IIIE TIRES oF VEHICLE WHEELS.

FILED DEc. 30. 1921.

Immwx:

Otto rampusch his Atforey'.

Patented Jan. 9, 1923.

r UNITED'4 s-irarizs oTTo TRAMPsCm or AUGSBURG, 4GEerrant?.'

:PNEUMATIC TUBETQR'THE TIRES or vnmctnwnnnts;

Application filed December 30, 1921. vSerial No. 525,920.

T 0 all whom t may concern Be it known that I, OTTO TRAMPUSCH, citizen of the Republic of CZecho-Slovakia, residing at Augsburg, Germany, have invented certain new and useful Improvements in Fneumatic Tubes for the Tires of Vehicle Wheels, of which the following is a specification.

The present invention relates to pneumatic tubes for the tires of vehicle wheels, and consists essentially of a series of juXtaposed cells or chambers each of which is connected by -non-return valves with inflation and deiiation conduits.

By means of my invention the several cells of the tube may be simultaneously in- `flated or deflated, while in case of injury to or puncture of any cell, the remaining cells remain intact and (if inlated) ytend to oc-A cupy the space theretoforey occupied by the injured cell. As a consequence, even though one or morencells be deflated, the tire containing the tube may be used for a considerable period of time without the need of repairing or changing tubes. y

The preferred embodiment of the invennication by means of a non-return valve bV with the inflation conduit c and by means of a second non-return valve d with the kde-y flation conduit e. The two conduits c and e traverse the cells a axially and are connected at one end by a valve body f, the defiation conduit c terminating in the passage g in said valve body and the deflation conduit e terminating` in the passage 7i `in said valve body. The passage g may be closed'by a valve plug i and the passage v7L maybe closed by ascrew cap 7c. i

The non-return valves b and al may be of any vdesired form, but preferably consist of flexible nipples connected respectively with the conduits c and e, said nipples having passages therethrough which are constricted at the outletends so that the ends of the ,is also under atmospheric pressure.

f nipples maybe pressed together and the outlets automatically closed by the pressure prevailing inthe space where the nipples terminate. n

The cells may be formed from a continuous tube which is divided into sections and the parts vulcanized to the imiation and deflation ducts. structed, as shown in the drawing, of a dou The latter may be con-` ble conduit having an inner dividing wall or it may be formed by winding a strip of rubber into S shape and vulcanizing the ends thereto.

The device is operated as follows By removing the cap Z from the plug z' and applying an air pump to the plug, air l may be pumped into the passage g and forced through the iniiation conduit c and the valves Z) into the chambers a, lilling the latter with air under pressure. lt will be understood that the air pressure is su'liicient to distend nipples b so as to permit free vflow of the airA into the cells a. Air flowsy from the chambers or cells a through the valvescl and the deflation conduit c and duct l1, until uniform vpressure prevails throughoutv the entire structure. as the tube has been suiiiciently inflated the passage g is placedy in communication with atmosphere whereby the inflation conduit As a result of the relatively high pressure in the cells a the non-return valves b close automatically because the very fine openings in sure prevailing in the cells. If any of the As soon the valves are pressed together bythe prescells va is injured or punctured the air esfrom the individual cells through the deflation valves d. n

. I claim lA pneumatic tube of the character described, comprising a plurality of individual inflatable cells, a tube traversing said cells axially, a partition in said tube dividspace into which said outlet end extends ing the same into an iniation conduit and a Will compress the yvalve and automatically 10 deiation conduit extending parallel to each close the outlet end thereof.

other, and valves in the Walls of said conduits A In testimonywhereof I affix my signature.

controlling communication between said Cells OTTO TRAMPUSCH. and said conduits, each of said -Valves havf Witnesses: y ing a passage therethrough constrioted at MARC SMITH,

its outlet end Wherebyiexcesspressure inthe w PAULDEY.- Y* 

